Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:12:49 2013 Optimize a model with 1400 rows, 100800 columns and 201900 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.15s Presolved: 1300 rows, 100700 columns, 201300 nonzeros Variable types: 100700 continuous, 0 integer (0 binary) Root relaxation: objective 7.543716e+05, 6876 iterations, 0.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 4 - 754371.571 - - 0s H 0 0 799636.19752 754371.571 5.66% - 1s 0 2 754371.571 0 4 799636.198 754371.571 5.66% - 2s 15 17 755181.305 8 1 799636.198 754769.728 5.61% 249 5s 48 50 771342.591 24 1 799636.198 754769.728 5.61% 260 10s 84 86 760147.804 42 1 799636.198 754769.728 5.61% 241 15s * 108 20 54 756195.67004 754769.728 0.19% 220 17s * 117 15 59 756060.44872 754769.728 0.17% 204 17s 174 18 755172.733 7 1 756060.449 755024.659 0.14% 149 20s * 309 7 31 755674.17564 755592.355 0.01% 97.0 24s Explored 312 nodes (36844 simplex iterations) in 24.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556741756437e+05, best bound 7.555989679132e+05, gap 0.0100%